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Mac_4 · 05-11-2016, 04:33 AM

Why are you all getting so hung up on where things are made?
Germany has some of the most stringent standards in the world with the TÜV. I don't think the problem lies with where these tubes were made, but maybe what material they were made from. If they are made from Nitrile they could be suffering from ozone damage. Over a relatively short period of time the ozone in the air will deteriorate the nitrile causing it to split. Remember in the old days the side walls of tires used to crack and split? ....Ozone!
To get around this problem the rubber has antiozonants added before it is vulcanised. There are other treatments as well to prevent damage from ozone.
You need to find a reputable supplier that can give you the material specifications and trust that not everything made outside the USA is crap.

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05-11-2016, 04:33 AM	#45
Mac_4 Junior Member Join Date: Jan 2012 Posts: 23	Re: Tubes Why are you all getting so hung up on where things are made? Germany has some of the most stringent standards in the world with the TÜV. I don't think the problem lies with where these tubes were made, but maybe what material they were made from. If they are made from Nitrile they could be suffering from ozone damage. Over a relatively short period of time the ozone in the air will deteriorate the nitrile causing it to split. Remember in the old days the side walls of tires used to crack and split? ....Ozone! To get around this problem the rubber has antiozonants added before it is vulcanised. There are other treatments as well to prevent damage from ozone. You need to find a reputable supplier that can give you the material specifications and trust that not everything made outside the USA is crap. Sent from my SM-N910F using Tapatalk Last edited by Mac_4; 05-11-2016 at 05:14 AM.